package com.sky.aspect;
import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.time.LocalDateTime;


@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){};


    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinpoint){
        log.info("开始进行公共字段自动填充");
        MethodSignature signature= (MethodSignature) joinpoint.getSignature();
        AutoFill autoFill=signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType=autoFill.value();


        Object[] args = joinpoint.getArgs();
        if(args==null || args.length==0) {
            return;
        }
        Object entity=args[0];

        LocalDateTime now=LocalDateTime.now();
        Long currentId= BaseContext.getCurrentId();

        if(operationType == OperationType.UPDATE){
            try{

                Method setUpdateTime = entity.getClass().getDeclaredMethod(
                        AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(
                        AutoFillConstant.SET_UPDATE_USER, Long.class);


                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);


            }catch (Exception e){
                e.getStackTrace();
            }
        }
        if(operationType == OperationType.INSERT){
            try{
                Method setCreateTime = entity.getClass().getDeclaredMethod(
                        AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setCreateUser = entity.getClass().getDeclaredMethod(
                        AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(
                        AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(
                        AutoFillConstant.SET_UPDATE_USER, Long.class);

                setCreateTime.invoke(entity,now);
                setCreateUser.invoke(entity,currentId);
                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);


            }catch (Exception e){
                e.getStackTrace();
            }

        }

    }
}
